diff --git a/INSTALL_PRETTYLIB.sh b/INSTALL_PRETTYLIB.sh
index eb5d6fe..56034ef 100755
--- a/INSTALL_PRETTYLIB.sh
+++ b/INSTALL_PRETTYLIB.sh
@@ -33,11 +33,12 @@ test $? != 0 && echo "Couldn't cd to app source code directory '$MMT_CODE', fail
 
 
 echo "Installing Perl dependencies to the program dir '$MMT_CODE'"
-cpanm -L extlib --installdeps .
+echo "$MMT_CODE/transformer"
+cpanm -L $MMT_CODE/transformer/extlib --installdeps $MMT_CODE/transformer
 # Ubuntu 18 fails on one of the dependencies, unless --force is used...
 if [ $? != 0 ]
 then
-  echo "Perl dependencies install failed with error code '$?'. Using force." && cpanm -L extlib --force --installdeps .
+  echo "Perl dependencies install failed with error code '$?'. Using force." && cpanm -L $MMT_CODE/transformer/extlib --force --installdeps $MMT_CODE/transformer
   test $? != 0 && echo "Perl dependencies install failed with error code '$?'. Force did not help." && exit 9
 fi
 
diff --git a/transformer/cpanfile b/transformer/cpanfile
index 592814e..a6e24e2 100644
--- a/transformer/cpanfile
+++ b/transformer/cpanfile
@@ -1,5 +1,6 @@
 requires "Log::Log4perl";
 requires "YAML::XS";
+requires "YAML::LibYAML";
 requires "Email::Valid";
 requires "Getopt::OO";
 requires "Carp::Always::Color";
@@ -14,6 +15,3 @@ requires "IPC::Cmd";
 requires "Import::Into";
 requires "Modern::Perl";
 requires "DateTime::Format::MySQL";
-
-libyaml-perl
-libtext-csv-perl